The version of tmux available through the CentOS/RHEL repositories is very old and you are missing out if you don’t take a few minutes to upgrade to the latest release.
By default, the Linux terminal/text console will not disable the display after a timeout and will sit indefinitely waiting for you to do something.
I’m a huge fan of tmux and using split windows. However, I’ve never been able to wrap my head around the default key mappings.
For good reason, Chrony has been the default NTP implementation on RHEL/CentOS/Fedora for the last several releases. Let’s install and configure it.